MERLIN ROCKET FORUM

Topic : Mainsail & max size spinnaker wanted.

Does anyone have a mainsail to suit hog stepped alloy mast and a full size spinnaker that they are willing to sell?


Posted: 12/02/2010 23:19:13
By: Terry Macleod
I've got loads of stuff for sale, see post in the used equipment area.

The P&Bs are supposed to suit an M7 or M3 rig too according to Tom, I can't see why the Speeds won't as well.

http://www.merlinrocket.co.uk/forum/for_sale_bits/topic.asp?topic=306&page=1&sort=3&order=1&search=

Posted: 13/02/2010 07:50:34
By: Chris Martin
Hi Terry,

The important thing is to get the luff/foot measurements of the mainsail the same as your rig. Check before buying (our old Smokers Satisfaction had a different aspect rig from the NSM2 we now have).

I'm using a s/hand suit with a hog/centreboard stepped aluminium mast. We have to add sufficient shroud tension to pre-bend the mast - otherwise the top batten can be a real problem. It's OK on the low bow tank hulls (or those that have a bulkhead fitted) but on the high tank models you'll have problems getting tension

HTH

Colin


Posted: 13/02/2010 18:11:52
By: Colin
thanks all but I am worried that sails designed for carbom masts will be too full for me as i sail with my 10 year old son an our all up weight is around 16 stone.
the boat is a Gnome no 3398.


Posted: 13/02/2010 20:05:54
By: Terry Macleod
A full sail is a full sail regardless of what mast it will be set on. To "emulate" a carbon mast on an older rig you rake the spreaders back slightly more which will reduce fullness anyway. What you're looking for is a suit of Speed or Number One sails as they are about as flat as they come nowadays.


Posted: 13/02/2010 20:35:00
By: Chris Martin
Hi Terry,

The loose-footed mainsails can be flattened a bit more than the ones with the bolt-rope in the foot..
Im about 11 stone and I can keep the Merlin upright up to Force 3 singlehanded (maybe not elegantly!)
If you're going to use a secondhand suit, you could fit a couplr of cringles in the luff and leech and create a slab reefing system.

Colin


Posted: 14/02/2010 08:06:07
By: Colin
I have assumed that sails cut for a carbon mast have alot of luff curve and if they are used on an alloy mast without sufficient bent they will be very full. Is this correct?
I race mid week and at weekends with my son but my sails are getting tired. I need a main and a spinnaker that will keep us competitive and get me through the next year or so while my son gains some weight and strength. I will then buy a new suit.
main Luff = 5720
Foot = 2505
Jib = 2.8sqm


Posted: 14/02/2010 22:38:01
By: Terry Macleod
Hi Terry, that is my understanding, and while you can take the fullness out by putting the spreaders back and winding up the rig tension, and as a previous post said, you'll need to pull some hefty rig tension on to bend the alloy mast enough to flatten a full sail with the spreaders back - really meaning a low bow tank hull. Best to start with the flattest sails you can, as CM reccomended, Speeds or No1s

Do you know what mast section you're going to use, and the rig tensioning system ?

I sent an email with links for pictures to your mail adress for information - hope it helps. Both mainsails match your rig dimensions - the Speed sail is pretty flat by current norms and worked OK on an hogstepped M7.


Posted: 14/02/2010 23:43:28
By: KM
As long as the prebend matches the luff curve you will be OK. What you will never acheive is the same gust response as a carbon mast, but you won't get that even with sails designed for your mast.


Posted: 15/02/2010 08:05:16
By: Chris Martin
Terry,

Where are you? - once the warmer weather kicks in, I'll be back into having the Merlin ready for sailing. If it helps, you're welocme to come and see/try

Colin (3387)


Posted: 15/02/2010 08:24:58
By: Colin
My boat is a Gnome built in 1987 with a low bow tank.
The mast is a proctor D section.
Rig tention and rake is controlled by a cascade system on each shroud linked under the fore deck and led bach to each side deck.
Keiron, I have replied to your E-mail.


Posted: 15/02/2010 11:34:53
By: Terry Macleod

REPLY

To Reply, please join/renew membership.

Owners Association


Developed & Supported by YorkSoft Ltd

Contact

Merlin Rocket Owners Association
Secretary